mercy
n. ① [U] 怜悯；饶恕；宽恕。如：
The commander showed mercy to the prisoners of war.
司令官对战俘十分怜悯。
② [C] 幸运的事；值得感激的事。如：
It was a mercy that the whole family survived the earthquake.
这次地震中一家人都幸免于难,真是不幸中之大幸。
What a mercy!
真是上天的恩惠！
[派生]
merciless adj. 无情的；残酷的
merciful adj. 仁慈的；慈悲的；宽容的
[拓展]
beg for mercy 恳请宽恕
have mercy on sb. 宽恕某人
show mercy to sb. 怜悯某人
at the mercy of 任凭……摆布；在……面前无能为力
without mercy 毫不宽恕地；无情地
[小试] 翻译下列各句。
1. The boy was screaming and begging for mercy.